Burt Lancaster

Gen. James Mattoon Scott

Kirk Douglas

Col. Martin "Jiggs" Casey

Fredric March

President Jordan Lyman

Ava Gardner

Eleanor Holbrook

Edmond O'Brien

Sen. Raymond Clark

Martin Balsam

Paul Girard

Andrew Duggan

Col. William "Mutt" Henderson

Hugh Marlowe

Harold McPherson

Whit Bissell

Sen. Frederick Prentice

Helen Kleeb

Esther Townsend

George Macready

Christopher Todd

Richard Anderson

Col. Murdock

Bart Burns

Secret Service White House Chief Art Corwin

John Alban

Party Guest (uncredited)

Monya Andre

Party Guest (uncredited)

Malcolm Atterbury

Horace the White House Physician (uncredited)

Walter Bacon

Reporter (uncredited)

Al Bain

Reporter (uncredited)

Bill Baldwin

Announcer (voice) (uncredited)

John Barton

Reporter (uncredited)

Jack Berle

Reporter (uncredited)

Robert Brubaker

Gen. Diefenbach (uncredited)

William Challee

Gen. Riley (uncredited)

Dick Cherney

Reporter (uncredited)